Home / 20,923.38-31,391.55-9,829.62

Finding the Fourth Proportional to 20,923.38, 31,391.55 and 9,829.62

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Solution

The fourth proportional to 20,923.38, 31,391.55 and 9,829.62 is: 14,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.38 : 31,391.55 = 9,829.62 : x
  2. Step 2: Convert to fraction form
    20,923.38/31,391.55 = 9,829.62/x
  3. Step 3: Cross multiply
    20,923.38x = 31,391.55 × 9,829.62
  4. Step 4: Simplify right side
    20,923.38x = 308,567,007.71
  5. Step 5: Solve for x
    x = 308,567,007.71/20,923.38
  6. Step 6: Final answer
    x = 14,747.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.